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The Oilfield Technology Group of Hexion Specialty Chemicals announced an environmentally improved method for determining proppant location, called the PropTrac Fracture Diagnostics Service. This technology allows operators to increase oil and gas production by optimizing perforating and fracturing strategy. The actual fracture geometry that occurs downhole can greatly affect the economic value of a well, and having a better understanding of downhole fracture dimensions allows operators to make more informed decisions and optimize well completion designs to enable the wells to produce to full potential. Relevant applications are unconventional reservoirs such as tight gas and shales. A major technical challenge faced with these wells, especially multi-zone, is the correlation of the post-frac production performance with both the reservoir’s properties and the completion procedure.